This publication provides a minimum standard for braided, ethylene tetrafluoroethylene (ETFE)-lined and pol-ytetrafluoroethylene (PTFE)-lined flexible hoses that have a nominal inside diameter (ID) of 0.25 in (6.4 mm) or less and shall have a maximum allowable working pressure (MAWP) of 3000 psi (20 680 kPa) at 70 °F (21.1 °C). These flexible hoses are sometimes referred to as pigtails.

This standard does not cover requirements for other polymeric or elastomeric line hoses.